The rotary evaporator is a common instrument used in laboratories and scientific research institutions. Let's take a look at the structure and working principle of the rotary evaporator.
Rotary evaporator structure principle:
Structure: The distillation flask is an eggplant-shaped or round-bottomed flask with a standard ground port, connected to a pressure reducing pump through a highly refluxing serpentine condenser, and the other opening of the reflux condenser is connected to a receiving flask with a grinding port. It is used to receive the evaporated organic solvent. There is a three-way piston between the condensing tube and the decompression pump. When the system is connected to the atmosphere, the distillation flask and the liquid-receiving flask can be removed and the solvent is transferred. When the system is connected with the decompression pump, the system should be reduced. Pressure state. When using, depressurize first, then start the motor to rotate the distillation flask. At the end, stop the machine first, then pass the atmosphere to prevent the distillation flask from falling off during rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water tank.
Rotary evaporator works:
By electronic control, the flask is rotated at a constant speed at the most suitable speed to increase the evaporation area. The evaporation flask was brought to a negative pressure by a vacuum pump. The evaporation flask was heated while being placed in a water bath at a constant temperature, and the solution in the flask was heated and diffusion-evaporated in a rotating flask under a negative pressure. The rotary evaporator system can seal the pressure to 400-600 mmHg; the solvent in the distillation flask is heated by a heating bath, the heating temperature can be close to the boiling point of the solvent; and the rotation can be performed at a speed of 50-160 rpm. The solvent is formed into a film to increase the evaporation area. In addition, under the action of a high-efficiency cooler, the hot vapor can be quickly liquefied to accelerate the evaporation rate.
For more information on the rotary evaporator, please read: Rotary Evaporator
In 2007, Shanghai Bayu ( ) Industrial Co., Ltd. established an offline supply system for laboratory instruments, MRO industrial products, etc. In 2009, it officially launched an online procurement operation platform.
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